Medication Summary

Specific medications for the many infectious, allergic, and hematologic-oncologic diseases associated with eosinophilia are beyond the scope of this article, which focuses on the causes of eosinophilia. A brief overview is provided under the heading of Medical Care.

Indurated edematous plaques of hypereosinophilic syndrome on a patient's legs.

Erythroderma in a patient with hypereosinophilic syndrome.

Granuloma with a central core of eosinophilic debris surrounded by a peripheral palisade of epithelioid histiocytes and eosinophils from a patient with Churg-Strauss syndrome (allergic granulomatosis).

Magnified view of papules and nodules with central necrosis in a patient with Churg-Strauss syndrome (allergic granulomatosis).